Relationship between MnS precipitation and respective effects of Ti-Mg bearing inclusions on the induction of intergranular acicular ferrite
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Xu Chen
Abstract
The role of MnS in the nucleation of intragranular acicular ferrites (IAF) has been explored in Ti-Mg treated steel sample through scanning electron microscope (SEM) and energy dspersive spectrometer (EDS). When compared with a non-treated sample, Ti-Mg treatment evolves from Al-Mn-Si-O inclusion to Ti-Mg bearing inclusion and causes a reduction in pure MnS. In addition to this reduction in pure MnS, a precipitation of MnS around the Ti-Mg bearing inclusion can be observed. Moreover, after etching, it can be found that Ti-Mg bearing inclusions can induce IAF nucleation. Based on EDS line analysis and a comparison with Al-Mn-Si-O inclusion in non-treated sample, this effect can be explained by the presence of an Mn-depletion zone (MDZ) caused by the vacancy property and crystal structure of the inclusion. It should be added, however, that in the same sample, a similarly induced nucleation effect as well as an MDZ have not been observed around pure MnS. This comparison implies that the formation of an MDZ may be independent of MnS precipitation.
References
1 T.Koseki, G.Thewlis: Overview inclusion assisted microstructure control in C-Mn and low alloy steel welds, Materials Science and Technology21 (2005), No. 8, pp. 867–87910.1179/174328405X51703Search in Google Scholar
2 W.Mu, P. G.Jönsson, K.Nakajima: Recent aspects on the effect of inclusion characteristics on the intragranular ferrite formation in low alloy steels: A review, High Temperature Materials and Processes36 (2017), No. 4, pp. 309–32510.1515/htmp-2016-0175Search in Google Scholar
3 H. K. D. H.Bhadeshia: Bainite in Steels Theory and Practice, 3rd Ed., Maney Publishing, London, UK (2015)Search in Google Scholar
4 B.Wen, B.Song, N.Pan, Q. Y.Hu, J. H.Mao: Effect of SiMg alloy on inclusions and microstructures of 16Mn steel, Ironmaking Steelmaking38 (2011), No. 8, pp. 577–58310.1179/1743281211Y.0000000010Search in Google Scholar
5 T. K.Lee, H. J.Kim, B. Y.Kang, S. K.Hwang: Effect of inclusion size on the nucleation of acicular ferrite in welds, ISIJ International40 (2000), No. 12, pp. 1260–126810.2355/isijinternational.40.1260Search in Google Scholar
6 T.Furuhara, J.Yamaguchi, N.Sugita, G.Miyamoto, T.Maki: Nucleation of proeutectoid ferrite on complex precipitates in austenite, ISIJ International43 (2003), No. 10, pp. 1630–163910.2355/isijinternational.43.1630Search in Google Scholar
7 I.Madariaga, I.Gutierrez: Role of the particle–matrix interface on the nucleation of acicular ferrite in a medium carbon microalloyed steel, Acta Materialia47 (1999), No. 3, pp. 951–96010.1016/S1359-6454(98)00388-7Search in Google Scholar
8 D. S.Sarma, A. V.Karasev, P. G.Jonsson: On the role of non-metallic inclusions in the nucleation of acicular ferrite in steel, ISIJ International49 (2009), No. 7, pp. 1063–107410.2355/isijinternational.49.1063Search in Google Scholar
9 J. H.Shim, Y. J.Oh, J. Y.Suh, Y. W.Cho, J. D.Shim, J. S.Byun: Ferrite nucleation potency of non-metallic inclusions in medium carbon steels, Acta Materialia49 (2001), No. 12, pp. 2115–212210.1016/S1359-6454(01)00134-3Search in Google Scholar
10 J. S.Byun, J. H.Shim, Y. W.Cho, D. N.Lee: Non-metallic inclusion and intragranular nucleation of ferrite in Ti-killed C-Mn steel, Acta Materialia51 (2003), No. 6, pp. 1593–160610.1016/S1359-6454(02)00560-8Search in Google Scholar
11 K.Yamamoto, T.Hasegawa, Jin-ichiTakamura: Effect of boron on intra-granular ferrite formation in Ti-oxide bearing steels, ISIJ International36 (1996), No. 1, pp. 80–8610.2355/isijinternational.36.80Search in Google Scholar
12 J. M.Gregg, H. K. D. H.Bhadeshia: Solid-state nucleation of acicular ferrite on minerals added to molten steel, Acta Materialia45 (1997), No. 2, pp. 739–74810.1016/S1359-6454(96)00187-5Search in Google Scholar
13 J. H.Shim, J. S.Byun, Y. W.Cho, Y. J.Oh, J. D.Shim, D. N.Lee: Mn absorption characteristics of Ti2O3 inclusions in low carbon steels, Scripta Materialia44 (2001), No. 1, pp. 49–5410.1016/S1359-6462(00)00560-1Search in Google Scholar
14 CaiZhengyu, LinHao, TianXiangshen, KongHui: The relationship between MnS precipitation and the induced nucleation effect of Ti-bearing inclusions, Practical Metallography54 (2017), No. 2, pp. 95–10610.3139/147.110415Search in Google Scholar
15 TianXiangshen, ZhuLongfei, CaiZhengYu, KongHui: The relationship between MnS precipitation and induced nucleation effect of Mg-bearing inclusion, High Temperature Materials and Processes37 (2018), No. 8, pp. 711–71610.1515/htmp-2016-0259Search in Google Scholar
16 ChaiFeng, YangCai-fu, SuHang, ZhangYong-quan, XuZhou: Effect of magnesium on inclusion formation in Ti-killed steels and microstructural evolution in welding induced coarse-grained heat affected zone, Journal of the Iron and Steel Institute16 (2009), pp. 69–7410.1016/S1006-706X(09)60013-3Search in Google Scholar
17 HuiKong, LinHao, YueQiang, CaiZhengyu: Effects of TiMg Complex Inclusions on Acicular Ferrite Nucleation, High Temperature Materials and Processes36 (2017), pp. 459–46510.1515/htmp-2015-0242Search in Google Scholar
18 X.-J.Zhuo, Y.-Q.Wang, X.-H.Wang, H.-G.Lee: Thermodynamic calculation and MnS solubility of Mn-Ti oxide formation in Si-Mn-Ti deoxidized steel, Journal of the Iron and Steel Institute17 (2010), pp. 10–1610.1016/S1006-706X(10)60051-9Search in Google Scholar
19 X.Li, YiMin, C.Liu, M.Jiang: Study on the formation of intragranular acicular ferrite in a Zr-Mg-Al deoxidized low carbon steel, Steel Research International87 (2016), No. 5, pp. 622–63210.1002/srin.201500167Search in Google Scholar
20 M.-Mm.Song, B.Song, C.-L.Hu, W.-B.Xin, G.-Y.Song: Formation of acicular ferrite in Mg treated Ti-bearing C-Mn Steel, ISIJ International55 (2015), No. 7, pp. 1468–147310.2355/isijinternational.55.1468Search in Google Scholar
21 X.Deng, M.Jiang, X.Wang: Mechanisms of inclusion evolution and intra-granular acicular ferrite formation in steels containing rare earth elements, Acta Metallurgica Sinica (English Letters)25 (2012), No. 3, pp. 241–24810.11890/1006-7191-123-241Search in Google Scholar
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Articles in the same Issue
- Fachbeiträge/Technical Contributions
- Durability studies on vibration-loaded electrical contact systems subjected to tribological stress
- A new hybrid approach for reliability-based design optimization of structural components
- Investigation of the microstructure of dissimilar welds in duplex stainless steel and low alloyed steel
- Microstructure and fracture performance of 304 stainless steel laser repairs with Al2O3 nano-particles
- Wet corrosion behavior of copper exposed to recycled groundnut oil as biofuel
- Numerical and experimental performance evaluation of an innovatively manufactured centrifugal pump
- Effect of weld parameters on the microstructure and mechanical properties of dissimilar friction stir joints between pure copper and the aluminum alloy AA7075-T6
- Mechanical properties of waste mussel shell particles reinforced epoxy composites
- Effect of fiber length on the mechanical properties of banana fiber – vinyl ester composites
- Effect of rare earth elements on the microstructure and properties of a die-cast aluminum alloy
- Relationship between MnS precipitation and respective effects of Ti-Mg bearing inclusions on the induction of intergranular acicular ferrite
- Influence of graphene coating on altering the heat transfer behavior of microprocessors
- Microstructure and wear of FeCrC, SiC and B4C coated AISI 430 stainless steel
- Potentiometric studies on the influence of poly(N-vinylpyrrolidone) on the thermal degradation behavior of poly(vinyl chloride) blends